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Dafna11 [192]
3 years ago
13

***BRAINLIEST AVAILABLE*** Please see if you can help me

Mathematics
2 answers:
kobusy [5.1K]3 years ago
8 0
Since it’s a 2% error it can be 2% less or greater than 60% so h hours are between 58% and 62%.
alekssr [168]3 years ago
8 0

Part A:

If the margin error is plus minus 2% , it means the range lies between minus 2 an plus 2 of the given percentage. As the given percentage is 60%, so the margin lies between 58% and 62%.

Part B:

A confidence interval is defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

Hence, option C is correct.

You might be interested in
Find the area of the shaded segment of the circle.
vredina [299]

Answer:

Around 5.5 square meters

Step-by-step explanation:

You can start by finding the area of the segment. Since the rest of the circle that is not in the segment is 240 degrees, the segment is 120 degrees or a third of the circle. You can therefore find the area of that segment with the formula \frac{1}{3} \pi r^2 =3\pi square meters. Now, you need to find the area of the triangle inside the sector. This is more difficult than last time, because it is not a 90 degree angle. However, you can solve this by dividing this triangle into two 30-60-90 triangles, which you know how to find the ratio of sides for. In a 30-60-90 triangle, the hypotenuse is twice the length of the smallest leg, and the larger leg is \sqrt{3} times larger than the smaller leg. In this case, these dimensions are a base of \frac{3}{2} for the smaller leg and \frac{3\sqrt{3}}{2} for the larger leg, or the base. Using the triangle area formula and multiplying by 2 (because remember, we divided the big triangle in half), you get \frac{9\sqrt{3}}{4} square meters. Subtracting this from the area of the segment, you get about 5.5 square meters. Hope this helps!

5 0
3 years ago
Answers please :) !!
My name is Ann [436]

Answer:

A and D are probably the answers  

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
A family of two adults and three children goes to a play admission costs eight dollars per adult and $5 per child. What expressi
Sidana [21]
D = adult
c = child
t = total admission cost

t = 8d + 5c

t = 8(2) + 5(3) = $31
5 0
4 years ago
If f(x)=-2x+3, g(x)=5x^2+4x-5, and h(x)=7x^2-8, find h(4)
iVinArrow [24]

Asked to find h(4). Hence, we don not need f(x) and g(x).

Substitute x=4 in h(x).

so, h(4) = 7*(4)^2 - 8 => 112 - 8 => 104

hope it helps.

7 0
3 years ago
Are these correct ? And help with number 3 please
alina1380 [7]
Yes, 1 & 2 are correct. 3 would be explaining how you got your answers. For example, you could use number 1 and say you thought about 10 x 3 equals 30 so 3 groups with 8 left over and so on or however your thought process went.
4 0
4 years ago
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